The best Coolant & Spark Plugs For 5.4L?

I have a 2000 F-150 4X4. Its almost at 100,000 Miles. What is the best Spark plugs and the best Coolant to use? I also want to flush my cooling system also. Is there a better coolant for alum. heads? And should I use single platinum or double platinum plugs? My manual says to use AWSD-22E Plugs, which I assume those are Motorcraft. But I am not sure if they are single or double platinum?

If that is what the manual says, I'd stick with it. I think there is an Autolite plug that is comparable to the Motorcrafts for a cheaper price. As for coolant, I went with Walmart brand Supertech and mixed it myself 60/40 strength with distilled water, I think it works just as well as the expensive Motorcraft stuff. Just my 2 cents.

stick with the Motocraft plugs. never have a problem. other brands dont play well with some of the 5.4 V8 motors. as for antifreeze, i think the cheaper Wal Mart brand is fine. its all the same anyway.

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